Break up sex?

The one thing that scared me after having broken up with Rob in 2007 was sex.
I was used to unprotected sex with a partner I thought was faithful.
I never thought Rob did penetrative sex with anyone as he was always uncomfortable with that even with me, though he let me. So I was really never afraid of an STD.
I had always told Rob that should he pass anything off to me from his "encouters" behind my back, that I would literally kill him with my bare hands, and I would have. That said, I never contracted any STDs. Im not sure about Rob. He had complained of bleening in his urine at times and that may have been some infection of types, I dont recall. After we broke up we took some time apart. On a vacation we took the the Mayan...we had 2 nights of lustful energetic and drunken sex. Somethin I needed for a long time. I rememebr uttering words like, "I miss you", "I love you" during our encounters, and I did, I really did. I was comfortable and exciting at the same time, something I was missing in my life.
We went to Africa and spent 10 days in the dusty Mara and Serengeti, camping along. The holiday ended in Zanzibar in a cute little rustic hut.
There we again had instense sex but that was more of an outlet from 10 days of nothing. At home, at my apt it happened a few times.
The thing was..it seemed that when Rob needed to get off, that is when advances were made. Whenever I felt the need to be with a man, those signals went un noticed. Only once after we broke did I make a flat out request for sex and it happened otherwise it was up to him, like I was at his beck and call that way.